Financial and capital risk management (Details 9) - Embedded Derivatives Gas Purchase [Member] - Risk Pellet Price Increase [Member] $ in Millions |
Jun. 30, 2026
USD ($)
|
|---|---|
| IfrsStatementLineItems [Line Items] | |
| Fair value of liabilities | $ (2) |
| Sensitivity Scenario I [Member] | |
| IfrsStatementLineItems [Line Items] | |
| Fair value of liabilities | (5) |
| Sensitivity Scenario II [Member] | |
| IfrsStatementLineItems [Line Items] | |
| Fair value of liabilities | $ (12) |